OS X :: Is It Better To Use Ac Power Or Battery
May 31, 2010
I recentelly got a g4 powerbook titanium for a good price and aslo found a good battery for it online. I'm wondering if its better for battery life to use the powerbook on ac power when its available like when im at home or in starbucks and there is an outlet available or should i use it on battery alone unless the battery needs to be charged? I dont want to harm the powerbook or the battery but still want to get the longest life from the battery.
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Mar 19, 2008
My girlfriend has a 12 inch Powerbook G4. She noticed that the battery life was starting to dwindle. Tonight, she tried using it. It wouldn't power up. The battery indicator showed one flickering power circle. The adaptor has the green circle on it, indicating the battery has a full charge. However, the computer won't charge up.I've read the 12 inchers don't have separate PMUs. Could that prevent the machine from starting? She was using it earlier this evening, as she e-mailed me pictures from our vacation.
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Apr 29, 2010
Just wondering if anyone has ever encountered this or if any experts out there know of the issue.I have a spare White Macbook (late 2008: Core 2 Duo 2.1GHz, 1GB, 120GB) that I'd like to set up for my brother to use to introduce him to the wonderful world of Macs. The problem it is having is that when I have a battery connected to it (I tried 2 different ones included a known-good one that is brand-new just purchased from Apple) it powers on and gives me the chime, but then immediately shuts off unexpectedly giving that little "whine" sound like if it just lost power all of a sudden. However, when i take out the battery, and just plug it into the Magsafe AC charger it works fine. Also when just trying to run on battery it does not turn on at all. Here's some cliffs:
1) Macbook with just battery does not turn on
2) Macbook with battery + Magsafe AC charger connects powers on, gives the chime, but then immediately shuts off making the "whine" sound as if the power was suddenly cut off
3) Macbook with no battery connected and just the Magsafe AC charger connected works fine.Do you guys think this is either:
A) battery connector issue (the little piece with the metal wires that the battery connects to. ~$50 part)
B) Logic Board issue
I already tried resetting the PRAM and SMU to no avail.
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Jun 18, 2010
I just turned on my 13" MBP and got this message. Apparently, this is supposed to come up when there is only like 5% charge left. My battery indicator at the top of the screen said there was 22% charge left. Also, according to IStat, my battery's health has already dropped down to 97% after only about 2 weeks and 5 cycles. Is this normal? I'm going to try recallibrating my battery by fully charging it and then letting it fully drain. Is there a good chance that this solves this problem?
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Apr 30, 2012
tried 2 boot up my G4, nothing, replaced internal battery, no status change, advice? would still like to be able to use it if possible and affordable
Info:
G4 dual os boot, Mac OS X (10.4.11), will also boot up in OS 9.2.2 when
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Nov 29, 2010
As I just bought a 13" MBA, I am still in my "babying" phase of the machine and want its battery power/capacity to last as long as possible. I have already done the battery calibration recommended by Apple (not even sure if its 'necessary' but I did it anyways), with charging, resting, draining, resting, and re-charging. But now I am worried about the battery cycles. Should I only plug my MBA in when the battery is close to being drained (aka use it on battery power for most of my usage?) or is it okay to drain the battery to like 80% remaining, charge, and then drain to 70% remaining, then charge again? Im not sure if Im making sense, but basically I don't want to be wasting these valuable cycles, as they seem to determine battery health and longevity. So what is the proper battery usage for the MBA, or is it basically use off power when you want and use on power supply when its available?
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May 22, 2012
I recently discovered my computer had died while it was sleeping. I tried charging it but am recieving the "Battery not charging, power source: power adapter" status.My power cord light is green, always. and the computer dies instantly when I remove the magsafe.
I've tried the "remove the battery, press the power button, plug in the magsafe" troubleshooting process, but it doesn't work.I've noticed that even with the battery out, the charger reads a green light.I've tried several outlets with the same results.Here are my battery statsÂ
Battery Information:Â
Model Information:
Serial Number:Â Â Â DP-ASMB016-384e-7636
Manufacturer:Â Â Â DP
[code]....
Info:
MacBook, Mac OS X (10.5.8)
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Jul 29, 2010
I have a mid-2007 MBP. Here is my issue...it's been more than a year that when I totally discharge my battery (meaning the MBP shuts down), when I connect it back to the charge it is taking abotu 10 minutes to power up again...it was not the case before and my wife's MB is working well....meaning when it is down, just connecting the charger the MB is back on within a sec.
I have changed my battery but it did not change anything, I called Apple and they recommended me to restore snow leopard...which I did...I still have the same issue.
Does anyone experience this? Any idea what is happening (HW or SW issue) and is there a potential fix?
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Jun 21, 2012
I have just bought a second hand MacBook laptop and it has a wierd battery issue that can't seem to find mentioned anywhere.Initally all seemed fine, but then I noticed the battery wasn't charging and the battery menu reported no battery found, also the MagSafe plug had not light; some searching instructed me to reset the SMC which I did, and everything was fixed, I could runs the computer from the battery and the power lead charged the battery. But now (just a day later) the battery won't power the computer at all - the computer will only work if the power is connected - however the light is shown on the MagSafe plug and the battery is being changed, but if I disconnected the power lead, first I see the restar/sleep/shut down dialog that you see when pressing the power button, then shortly after the computer turns off, if the power if reconnected, it boots from scratch, so it wasn't asleep!
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Nov 20, 2007
Can anyone advise which is better for a battery backup for my PowerMac G5 (APC vs. Belkin)?
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Oct 19, 2010
Leave it on or turn it off like bluetooth for longer battery life?
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Nov 16, 2010
Am I right in assuming that my MBP will switch off power to the Mini Displayport, when running on batteries ?Well mine does, but want to make sure that's right ?
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Nov 13, 2009
Just checking to see if anyone else has had that this problem since upgrading to 10.6.2 I have an older MBP that is on its second battery. I dont normally use that battery as this is my only computer. it has about 61 cycles on it and seems to be in good health. the MBP turned its self off all of a sudden with about 60% charge left
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May 29, 2010
I have a brand new MBP 17inch, the battery would not charge with the charger. It basically went close to empty and then I decided to shut down and restart to see if it will reset and start charging.. Now the MBP doesn't even turn on
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Apr 4, 2012
I am wondering if my battery is losing its power? Fully charged I get 3 hours at the very most from it. I started this morning at 100% and after 10 minutes am down to 85%. This computer was purchased in 2008.
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May 21, 2012
The 2011 macbook pro with i7 processor will not power up or charge at all. The problem started after my battery ran out and the computer shut down. Since then, when I plug in the charger only the green light turns on. In addition the light on the base (in front of the keyboard) flashes. Nothing happens when I hit the power button. The charger still works on other laptops. To emphasize, the screen will not even light up. It sounds as if the computer is starting (for less than a second) before stopping, only to start again but that is purely speculative.
Info:
MacBook Pro
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Jun 13, 2012
Before buying a new 11" Air I need to know if one with the i7 OS would use appreciably more battery power than one with the i5?
And, since I am not a gamer or user of complex software, is there any real advantage to going with the i7 over the i5?
Info:
MacBook Air
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Jun 23, 2012
My MacBook is still going strong, but in the event that the battery dies, will it still run on AC power?
Info:
MacBook, iOS 5
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Oct 8, 2007
I want to get a battery backup for my PowerMac G5 dual 1.8ghz PPC, but the numbers confuse me. the UPS selector tool on APC's website suggests I can get away with one that runs at 800VA.i dont need it to last long, I'm really just looking for something that will protect from surges, condition the power, and give me enough time to shut down in case of a power outage. I wouldnt need more than a few minutes, and I dont expect more than a few minutes power supply.
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Oct 12, 2010
Well I just scored a 15 inch 2.4 from Bestbuy for 10% off. SOmebody just returned it having never even used it, but they had to discount it because it was opened. I love it love this thing!We did migration from our imac and everything came over. AmazingOne question about calibration. I charged it fully and let the power cord be in it for an extra 2 or so hours. I then used it unplugged until it basically shut off due to no power. Cant I just plug it in and let it charge all the way without letting it sit for 5 hours. Its not sleeping I dont think. It actually shut off suddenly as it was at zero percent. There is no power to it at all that I can tell. Will charging it now without leaving it unplugged for 5 hours ruin the calibration??
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Dec 2, 2010
I have a late 2007 MBP 15inch 2.33Ghz Core 2 Duo. I have had since new and no problems. Over this last week I have had the same issue a couple of times. The MBP just switches itself off. The first time it did it, it was running on battery (I was using Aperture) and had 60% power available. It would refuse to re-start until I connected it to the mains and then it ran fine.
Then it did the same thing overnight at some point. I had left it connected to the mains (as I always do at home), had shut the lid to put it into sleep mode. When I came back it was switched off. No-one had touched it whilst I was away but yet it had just turned itself off.The only thing that I noticed was that when I started it up both times the little light on the magsafe connecter kept flashing between orange and green. However when the computer booted into OS X both times it showed a reasonable amount of power in the battery.
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Aug 3, 2007
I have an 14" iBook, 1.07 GHz and it won't use battery power. As soon as I unplug it it turns off. It worked fine until I opened it up and swapped in a DVD-RW and a new hard drive (the old one was failing). In the power section of system profiler it shows 98 load cycles and about a 75% remaining capacity. It may or may not be charging - I can't tell. The battery says it's fully charged at 95% and I have no way to drain it and see if it will recharge because the computer won't drink from the battery. I had another 14" iBook battery laying around that I thought worked, but now when I put it in this computer it just sits at 0% then eventually says the battery is dead (the menu icon shows an X through it).
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Sep 16, 2008
My iBook G4 occasionally cuts out without warning when it's being powered by the battery.The battery still seems to have charge - it will light up all 4 charge lights when the button on the battery itself is pressed.It also boots back up straight away when the power on button is pressed after having cut out.This has never happened when the iBook is plugged in to the mains supply.
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Jan 19, 2009
I am just wondering if there is a way to have a brightness preset for when the macbook is plugged into the wall and running on battery?Eg. When plugged in I want 100% prightness, but when running off battery it automatically lowers the brightness.Right now I manually lower it and some times forget.. especially times when I need that extra bit of battery power
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Apr 27, 2009
My macbook is charging and it's at 33% and it says it has 7 hours remaining until it's complete. iStat tells me that my battery is still 100% with 70 cycles. My macbook is only 6 months old, and this battery issue started happening just a few days ago. Could it be the charger? sometimes I plug in the charger and the light doesn't come on sometimes. Also something odd that I noticed, when my charger isn't plugged in it still says its power source is from the power adapter. Could it be from using my parents macbook pro charger on my macbook?
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Aug 29, 2009
With UPS plugged in (APC) via USB, there are two "plug-in" icons - side by side. When power adapter is removed (on battery), it changes to two vertical rectangles with two dashes within each. When UPS is unplugged from USB, these change to a "battery and a half" - in other words, a normal horizontal battery indicator plus half of one to the right. The same will happen when on a/c - you end up with a normal horizontal "plugged in" status plus half of one to the right.
Toggling the "Show battery status in the menu bar" will return the icon to normal - as long as the UPS remains unplugged from USB.
Bottom line - as long as the UPS in connected via USB, there will be an incorrect power status icon. With it connected, a double display; when disconnected, one and a half normal status icons will be displayed, until the "Show battery..." is toggled.
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Jan 6, 2010
In the coming days I am supposed to be in delivery of my new MacBook Pro and was wondering if it is better to just use the built in battery to power on my MacBook Pro for the first time and just power it off the battery until the battery is fully discharged? Or should I power my MacBook Pro from the power adaptor?
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Jan 16, 2010
I have a MacBook (purchased in May) that has issues with the battery status. When the MagSafe Adapter is plugged in, it shows that the battery is charging, but when the MagSafe Adapter is unplugged from the computer, the computer does not recognize that it is running on battery power. (It still shows that it is running on A/C power.) I have already reset the System Management Controller, and it didn't work. What else can I do?
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Jun 21, 2010
I'm just wondering if anybody knows whether it is possible to obtain a replacement battery and power supply for such an old computer. My 17-inch MacBook Pro is about five years old, and the battery seems to be completely dead. It will not start up, will not take a charge, and cannot be used, whether plugged in or not. A multitester test suggests that the power supply no longer works either. My MacBook has one of the older-design power supplies, with the circular port, rather than the newer, magnetic, rectangular ones. I'm planning on getting a new MacBook in the near future, but I need to access some things that are saved on my old Mac's hard drive, if at all possible.
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Jun 24, 2010
The title says it all, basically my MBP's battery drains even if the computer is plugged. When I sat at my desk to use my MBP earlier today I noticed the battery was charging. That seemed very weired, I was sure it was at 98% last night. I decided to switch my computer off and let it charge all the way up.
When I turnt on my computer again i checked the battery and everything seemed normal, but after half an hour or so I noticed that my battery status icon had chaged from charged to not charging. I loaded up Coconut battery and the battery was slightly over 90%...and it's still draining out while tipyng... The AC socket is fine and I have an HDTV connected to the same power source. Needless to say the tv is working normally... I do not have an Apple shop nearby, the closest is over 200 km (approximately 140 miles) away.
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